Imported from playableintelligence/game-creator (skills/add-assets/SKILL.md) via skills.sh. Install upstream with npx skills add playableintelligence/game-creator --skill add-assets. Copyright stays with the author (MIT).

Performance Notes

• Take your time to do this thoroughly
• Quality is more important than speed
• Do not skip validation steps

Add Assets

Replace basic geometric shapes (circles, rectangles) with pixel art sprites for all game entities. Every character, enemy, item, and projectile gets a recognizable visual identity — all generated as code, no external image files needed.

Instructions

Analyze the game at $ARGUMENTS (or the current directory if no path given).

First, load the game-assets skill to get the full pixel art system, archetypes, and integration patterns.

Step 1: Audit

• Read package.json to identify the engine (Phaser or Three.js — this skill is Phaser-focused)
• Read src/core/Constants.js to understand entity types, colors, and sizes
• Read all entity files (src/entities/*.js) and find every generateTexture(), fillCircle(), fillRect(), or fillEllipse() call that creates an entity sprite
• Read scene files to check for inline shape drawing used as game entities
• List every entity that currently uses geometric shapes

Step 2: Plan

Present a table of sprites to create:

If the game features a real person or named personality, default to the Personality archetype for the player character. This uses a 32x48 grid at scale 4 (128x192px rendered, ~35% of canvas height) — large enough to recognize the personality at a glance.

Choose the palette that best matches the game's existing color scheme:

• DARK — gothic, horror, dark fantasy
• BRIGHT — arcade, platformer, casual
• RETRO — NES-style, muted tones

Grid sizes range from 8x8 (tiny pickups) through 16x16 (standard entities) to 32x48 (personality characters). Named characters always use the Personality archetype to ensure the meme hook — recognizing the person — lands immediately.

Step 3: Implement

1. Create src/core/PixelRenderer.js — the renderPixelArt() and renderSpriteSheet() utility functions
2. Create src/sprites/palette.js — the shared color palette
3. Create sprite data files in src/sprites/:
   • player.js — player idle + walk frames
   • enemies.js — all enemy type sprites and frames
   • items.js — pickups, gems, hearts, etc.
   • projectiles.js — bullets, fireballs, bolts (if applicable)
4. Update each entity constructor:
   • Replace fillCircle() / generateTexture() with renderPixelArt() or renderSpriteSheet()
   • Add Phaser animations for entities with multiple frames
   • Adjust physics body dimensions if sprite size changed (setCircle() or setSize())
5. For static items (gems, pickups), add a bob tween if not already present

Step 4: Verify

• Run npm run build to confirm no errors
• Check that collision detection still works (physics bodies may need size adjustments)
• List all files created and modified
• Remind the user to run the game and check visuals
• Suggest running /game-creator:qa-game to update visual regression snapshots since all entities look different now

Example Usage

Standard game

/add-assets examples/asteroid-dodge

Result: Audits all entities using geometric shapes → creates src/sprites/ with player, asteroids, and gem pixel art → replaces fillCircle()/fillRect() with renderPixelArt() → collision bounds adjusted.

Personality game (from tweet)

/add-assets examples/nick-land-dodger

Result: Detects named personality → uses 32x48 Personality archetype at scale 4 → recognizable caricature as player character → enemies and items get themed pixel art.

Troubleshooting

Sprites appear but are wrong size

Cause: Pixel art dimensions don't match original hitbox. Fix: Keep sprite dimensions close to the original fillRect/fillCircle size. Adjust collision bounds if needed.

Sprites don't appear

Cause: Canvas texture not created before first render frame. Fix: Generate textures in scene preload() or create(), not in update().

Next Step

Tell the user:

Your game entities now have pixel art sprites instead of geometric shapes! Each character, enemy, and item has a distinct visual identity.

Files created:

• src/core/PixelRenderer.js — rendering engine
• src/sprites/palette.js — shared color palette
• src/sprites/player.js, enemies.js, items.js — sprite data

Run the game to see the new visuals. If you have Playwright tests, run /game-creator:qa-game to update the visual regression snapshots.